<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>vue</title>
</head>

<body>
    <div id="app"></div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
    let m = new Vue({
        data: {
            msg: 'xxxx'
        },
        render(h) {
            return h('div', this.msg)
        }
    }).$mount('#app')
    console.log(m,'xx')
</script>

</html>